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Otocinclus mimulus  Axenrot & Kullander, 2003

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Otocinclus mimulus
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Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Siluriformes (Catfish) > Loricariidae (Armored catfishes) > Hypoptopomatinae
Etymology: Otocinclus: Greek, ous, oto = ear + Latin, cinclus = latticework; in allusion to the holes of the head in the ears (Ref. 45335);  mimulus: Specific name derived from a Latin word, mimulus, diminutive of minus, meaning actor, given with reference to the mimicry in color pattern with Corydoras diphyes..   More on author: Kullander.

Environment / Climate / Range Ecology

Freshwater; demersal.   Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

South America: tributaries of río Monday, a right bank tributary of the río Paraná in Paraguay.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 4.3 cm SL male/unsexed; (Ref. 52874)

Short description Morphology | Morphometrics

Vertebrae: 22 - 23. Presence of an iris diverticulum; elevated, enlarged odontodes at posterior supraoccipital tip; lateral series 24-25; lateral line canals only on first 4-6 anterior plates in median series; lateral trunk coloration variable, including either row of 4-6 distinct dark blotches or distinct dark stripe extending from pterotic posterior process to base of caudal fin, or diffuse mixture of those two color patterns; premaxillary teeth 14-18 (commonly 15-16); mandibular teeth 12-16 (commonly 14); caudal vertebrae 15-17, modally 17; triangular pigment mark at anterior dorsal- fin base occasionally faint or absent (Ref. 52874).

Biology     Glossary (e.g. epibenthic)

Found in stream with dark, slightly turbid water, flowing through a landscape of mixed low forest and pasture (Ref. 52874). Collected at the margin of an open field, but the stream flowed through dense low forest left along its bank and providing shadow (Ref. 52874). Usually occurs in areas with sandy bottom, bank vegetation entering water or with marginal aquatic plants, dark, clear or slightly turbid water and limited associated fauna (Ref. 52874). Mimics Corydoras diphyes (Ref. 52874). Mimicry is unusual because the two species occupy different microhabitats and it is hypothesized to operate with a primarily visual predator moving between the microhabitats, tentatively identified as the cichlid Crenicichla lepidota (Ref. 52874).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator : Fisch-Muller, Sonia | Collaborators

Axenrot, T.E. and S.O. Kullander, 2003. Corydoras diphyes (Siluriformes: Callichthyidae) and Otocinclus mimulus (Siluriformes: Loricariidae), two new species of catfishes from Paraguay, a case of mimetic association. Ichthyol. Explor. Freshwat. 14(3):249-272. (Ref. 52874)

IUCN Red List Status (Ref. 115185)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

FAO(Publication : search) | FisheriesWiki |

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Internet sources

BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishes of Iran | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00550 (0.00229 - 0.01319), b=3.11 (2.90 - 3.32), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  2.1   ±0.1 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278):  High, minimum population doubling time less than 15 months ().
Vulnerability (Ref. 59153):  Low vulnerability (10 of 100) .